| 摘要 |
<p>Dispersion polymerization of an ethylenically unsaturated monomer (I) in the presence of a radical generator (II), iodine (III) and a water-soluble oxidizing agent (IV) comprises introducing at least a fraction of each of (I)-(IV) into a reactor and reacting the contents of the reactor while adding any balance of (I)-(IV). Dispersion polymerization of an ethylenically unsaturated monomer (I) in the presence of a radical generator (II), iodine (III) and a water-soluble oxidizing agent (IV) comprises introducing at least a fraction of each of (I)-(IV) into a reactor and reacting the contents of the reactor while adding any balance of (I)-(IV). (I) is styrene (Ia), (meth)acrylic acid (Ib), a diene, a vinyl ester, a vinylpyridine derivative, vinylsulfonic acid (Ic), vinylphosphonic acid (Id), an N-vinyl monomer, a chlorinated vinyl monomer or a derivative of (Ia)-(Id); (II) is a diazo compound, a peroxide or a dialkyldiphenylalkane; (IV) has a water-solubility of at least 10 g/l and may be the same as (II). An independent claim is also included for producing block copolymers by dispersion polymerization of (I) in the presence of a polymer (V) produced as above or produce by reacting (I) with a polymer produced as above, where at least aa fraction of (I) and at least a fraction of (V) is introduced into a reactor and the contents of the reactor are reacted while adding any balance of (I) and/or (V).</p> |
